Ndf
[医][=neutrophil diffraction factor]嗜中性粒（白）细胞衍生因子
🗣️ 情景例句
I'd like to borrow some money from you.
我想向你借点钱。
How many boxes are you going to use?
你要用几盒？
How long have you been learning English?
你学英语有多久了？